Network Working Group                           E. Westheimer
RFC #252                                        Bolt Beranek and Newman
NIC #7693                                       8 October 1971
Categories: F, G.3
Updates:  RFC 240
Obsoletes: None

The purpose of this RFC is to report on the recent status of most

Network Hosts. During September 27 through September 29 the BBN prototype

Terminal IMP (Network Address 158) was in-accessible due to hardware

debugging. The Network was, therefore, not examined on these days.

Three Hosts which were not officially able to act as Server's at the

time of RFC #240 are now able to do so. These Hosts are:

NETWORK

ADDRESS SITE COMPUTER

------- ---- --------

  2             SRI (NIC)               PDP-10
  6             MIT (Multics)           H-645
  9             HARVARD                 PDP-10

The Harvard PDP-10, however, has limited core space. They will,

therefore, run the Telnet program only occasionally.

The following two tables summarize the information on the Host status

for September 30 - October 8.

[Page 1]

---

ADDRESS SITE COMPUTER DAY, DATE and TIME (Eastern)

------- ---- -------- ----------------------------------

                                       Th   F    M    Tu   W    Th   F
                                      9/30 10/1 10/4 10/5 10/6 10/7 10/8
                                      1100 1530 1200 1600 1100 1300 1530

  1        UCLA          SIGMA-7        O    T    D    O    #D   O    O
*65        UCLA          IBM-360/91     O    O    D    O     D   O    O
  2        SRI (NIC)     PDP-10         O   #D    T   #T     O   T   #D
 66        SRI (AI)      PDP-10         D    D    D    D     D   D    D
  3        UCSB          IBM-360/75     D    O    O    O     O   O    O
  4        UTAH          PDP-10         D    D    D    D     D   D    D
 69        BBN (TENEX)   PDP-10         T    T    O    O     O   D    D
  6        MIT (Multics) H-645          O    O    D    T     D   T    D
 70        MIT (DM)      PDP-10         D    H    D    T     D   T    T
  8        SDC           IBM-360/67     D    D    D    D     D   D    D
  9        HARVARD       PDP-10         T    D    T    D     D   T    T
 10        LINCOLN       IBM-360/67     H    H    H    H     D   T    D

where

D = Dead. (Destination Host either dead or inaccessible [due to network

partitioning or local IMP failure] from the BBN Terminal IMP).

R = Refused. (Destination Host returned a CLS to the initial RFC.)

T = Timed out. (Destination Host did not respond in any way to the initial

RFC, although not dead.)

H = 1/2 Open. (Destination Host opened a connection but then either

immediately closed it, or did not respond any further.)

O = Open. (Destination Host opened a connection and was accessible to users.)

* The UCLA IBM-360/91 currently has Remote Job Service (NETRJS), but has

not implemented a full server Telnet System. The BBN Terminal IMP is not equipped to test NETRJS; however, we are assuming that receipt of the UCLA explanatory message indicates that NETRJS is also functioning.

# These sites advertise that they may not have their system available at

these time.

[Page 2]

---

NETWORK PREDICTIONS"

ADDRESS SITE COMPUTER STATUS or PREDICTION OBTAINED FROM

------- ---- -------- -------------------- -------------

  1       UCLA          SIGMA-7     Sever                   Jon Postel
 65       UCLA          IBM-360/91  Remote Job Service now, Bob Braden
                                    Telnet in April
  2       SRI (NIC)     PDP-10      Server                  John Melvin
 66       SRI (AI)      PDP-10      November                Len Chaiten
  3       UCSB          IBM-360/75  Server                  Jim White
  4       UTAH          PDP-10      "Soon"                  Barry Wessler
  5       BBN (NCC)     DDP-516     Never                   Alex McKenzie
 69       BBN (TENEX)   PDP-10      Server                  Dan Murphy
  6       MIT (Multics) H-645       Server                  Mike Padlipsky
 70       MIT (TENEX)   PDP-10      Server                  Bob Bressler
  7       RAND          IBM-360/65  User Only               Eric Harslem
 71       RAND          PDP-10      January                 Eric Harslem
  8       SDC           IBM-360/67  "Soon"                  Bob Long
  9       HARVARD       PDP-10      Server                  Bob Sundberg
 73       HARVARD       PDP-1       User only               Bob Sundberg
 10       LINCOLN       IBM-360/67  "Soon"                  Joel Winnet
 74       LINCOLN       TX2         Uncertain               Tom Barkalow
 11       STANFORD      PDP-10      November                Andy Moorer
 12       ILLINOIS      PDP-11      User Only               John Cravits
 13       CASE          PDP-10      December 15             Charles Rose
 14       CARNEGIE      PDP-10      January                 Hal VanZoeren
 15       PAOLI         B6500       Uncertain               John Cravits
144       AMES          TIP         User Only
145       MITRE         TIP         User Only
158       BBN (TIP)     Prototype   User Only
                          TIP

[ This RFC was put into machine readable form for entry ]

       [ into the online RFC archives by BBN Corp. under the   ]
       [ direction of Alex McKenzie.                   12/96   ]

[Page 3]

---